GFM Koch is a free software synthesizer developed by Games From Mars. Available format(s): VST, Audio Unit for Windows 64b, macOS.
GFM Koch is a physical synthesizer able to generate the punchiest percussive notes, by construction.
Thanks to the purity of its integration, its sound is especially crystalline from the lowest to the highest frequencies. Thus it is suitable for sub-bass stabs, percussive basses, emulating electric pianos and tonal percussions.
To compliment this raw sound, a sub-oscillator and voice-wise distortion is provided. This distortion is devoid of aliasing, again by construction.
{See video at top of page}
http://www.gamesfrommars.fr/plugins/